By Nikos Karampatziakis, Jack W. Stokes, Anil Thomas, Mady Marinescu (auth.), Ulrich Flegel, Evangelos Markatos, William Robertson (eds.)
This booklet constitutes the refereed post-proceedings of the ninth foreign convention on Detection of Intrusions and Malware, and Vulnerability evaluate, DIMVA 2012, held in Heraklion, Crete, Greece, in July 2012. the ten revised complete papers provided including four brief papers have been rigorously reviewed and chosen from forty four submissions. The papers are prepared in topical sections on malware, cellular protection, safe layout, and intrusion detection platforms (IDS).
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Additional info for Detection of Intrusions and Malware, and Vulnerability Assessment: 9th International Conference, DIMVA 2012, Heraklion, Crete, Greece, July 26-27, 2012, Revised Selected Papers
Currently, the host has no reliable means to protect itself. Throughout this work we highlighted that the I/OMMU has several issues and the host cannot necessarily count on this preventive countermeasure against DMA malware. Besides possible vulnerabilities and various preconditions that must be fulﬁlled for a successful I/OMMU deployment, the most obvious issue is that common OSes do not or do not suﬃciently support the I/OMMU. Hence, currently, DMA malware can easily attack OSes such as Windows.
The second possibility is to implement OS memory management mechanisms. That is, the attacker must ﬁnd a way to access memory page tables created by the OS. With access to the page tables the attacker can then traverse page tables and is able to resolve pointers from one data structure to another. Note, this still requires a known starting point for the search. 2. 1 General Design Our design of DAGGER is depicted in Figure 3. DAGGER is DMA malware. That is, DAGGER has to fulﬁll the DMA malware deﬁnition including at least the criteria C1, C2, and C3.
A lot of targets were found near 0x36e0000, i. , search times of around 12,500 ms that could also be saved. This increases the probability to miss keyboard buﬀer addresses. That is, we can get better (similar to the Windows attack) search times at the expense of eﬀectiveness. The best case Understanding DMA Malware 35 search times are suﬃcient to capture hard disk encryption passwords, for example. We tested this successfully with a Linux system. The Windows kernel can swap out memory pages to the hard disk – Linux does not.
Detection of Intrusions and Malware, and Vulnerability Assessment: 9th International Conference, DIMVA 2012, Heraklion, Crete, Greece, July 26-27, 2012, Revised Selected Papers by Nikos Karampatziakis, Jack W. Stokes, Anil Thomas, Mady Marinescu (auth.), Ulrich Flegel, Evangelos Markatos, William Robertson (eds.)